\documentclass[UTF8,titlepage]{ctexart}
\title {语言}
\author{huangyuan\thanks{sdut}\\SDUT \and xuan\thanks{sdut}\\SDUT}
%\includeonly{lang-natural}
\date{戊戌初春}
\begin{document}
\maketitle
\tableofcontents

 \section{正文一}
 \subsection{小章节}
 \subsubsection{小小章节}
%\include{lang-natural}
%\include{lang-computer}
\end{document}
